Preheat oven and grease tin:
Set oven to 400°F (205°C). Grease a muffin tin with baking spray and put aside.Soak cereal with milk:
In a bowl, mix cereal with milk; let sit until cereal softens and soaks up the milk. Add eggs and vegetable oil; stir until uniform.Mix dry ingredients:
Into the wet mixture, incorporate flour, brown sugar, baking powder, and salt. Briefly stir with a fork, then mix with a spoon only until combined. Avoid overmixing.Bake muffins:
Divide batter among the muffin tin cups. Bake 18-22 minutes. Allow to cool in tin for roughly 5 minutes, then move to a wire rack.